High-voltage switch cabinet with intelligent safety device and control method

Abstract

The invention discloses a high-voltage switch cabinet with an intelligent safety device and a control method, and relates to the technical field of high-voltage switch cabinet safety control, the high-voltage switch cabinet comprises a high-voltage switch cabinet body and the intelligent safety device, and the intelligent safety device comprises a safety risk monitoring module, a risk processing instruction generation module and a risk processing device. The intelligent safety device is integrated, the high-voltage switch cabinet can monitor potential safety risks in real time and respond in time, all-directional and multi-angle monitoring of the high-voltage switch cabinet is achieved by collecting visual pictures, audio data, operation data, vibration data and internal air pressure data, and the safety of the high-voltage switch cabinet is improved. The risk processing instruction generation module can automatically analyze monitoring data and generate corresponding risk processing instructions, so that the risk processing efficiency and speed are improved, the accident occurrence probability is remarkably reduced, the risk is automatically processed through the safety processing controller based on the control chip, the accident response time is effectively shortened, and the risk processing efficiency is improved. And damage possibly caused by accidents is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switch cabinet safety control, and in particular to a high-voltage switch cabinet with an intelligent safety device and a control method. Background Art

[0002] High-voltage switchgear consists of circuit breakers and cabinets, which include electrical components, secondary terminals, and metal shells. The equipment has a complex structure. If it is improperly installed or the performance of the components does not meet the standards, arc faults and creepage may occur, causing safety accidents.

[0003] High-voltage switchgear may generate high-pressure steam during operation due to faults such as short circuits. If the explosion-proof performance is insufficient, it may cause the cabinet to explode. The main problems include unreasonable pressure relief channels and improper design of ventilation and heat dissipation holes.

[0004] The existing technology uses technical means such as overload protection, protection of electrical connection parts, environmental monitoring devices, leakage protection devices, reasonable exhaust systems and fire extinguishing equipment for safety control, aiming to improve the safety and reliability of the equipment.

[0005] However, the problem with the above-mentioned safety protection devices is that although some equipment has certain self-diagnosis and alarm functions, the overall intelligence level needs to be improved, and it is unable to identify and analyze potential safety risks, and the risk resistance of cabinet explosion in extreme cases is insufficient. Summary of the invention

[0006] In order to solve the above-mentioned technical problem of safety protection of high-voltage switch cabinet, the present invention provides a high-voltage switch cabinet with intelligent safety device and a control method. The following technical solutions are adopted:

[0007] A high-voltage switchgear with an intelligent safety device comprises a high-voltage switchgear body and an intelligent safety device, wherein the intelligent safety device comprises a safety risk monitoring module, a risk handling instruction generating module and a risk handling device, wherein the safety risk monitoring module collects visual images, audio data and air pressure data within a set range around the high-voltage switchgear body and inside, and collects operation data and vibration data of the high-voltage switchgear body, wherein the risk handling instruction generating module is communicatively connected with the safety risk monitoring module, and analyzes whether there are safety risks and risk types based on visual images, audio data and vibration data, and generates risk handling instructions based on risk types, wherein the risk handling device comprises an automatic power-off control device, an automatic fire extinguishing device, an automatic pressure relief device and a safety handling controller based on a control chip, wherein the safety handling controller is communicatively connected with the risk handling instruction generating module to exchange risk handling instructions, and controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the risk handling instructions.

[0008] By adopting the above technical solution and integrating intelligent safety devices, the high-voltage switchgear can monitor potential safety risks in real time and respond in time. By collecting visual images, audio data, operating data, vibration data and internal air pressure data, all-round and multi-angle monitoring of the high-voltage switchgear is achieved. The risk processing instruction generation module can intelligently analyze the existence of safety risks and the types of safety risks based on visual images, audio data, operating data, vibration data and internal air pressure data. The analysis method can be based on visual feature recognition or based on the trained large model to intelligently analyze the types of safety risks. For high-voltage switchgear, the risk types include arc fault risk, mechanical failure risk, etc. The risks of arc faults, fires and internal overpressure are as follows. Arc faults are common risks in high-voltage switchgear. The automatic power-off control device disconnects the power supply to remind the staff to deal with them in time. Mechanical failure risks include structural damage such as damage to the outer box, which also requires the automatic power-off control device to disconnect the power supply to remind the staff to deal with them in time. For fire risks, only using power-off operations may cause greater losses due to fire. While using power-off operations, the automatic fire extinguishing device is controlled to perform fire extinguishing operations. Similarly, when analyzing the existence of internal overpressure risks, such as excessive internal air pressure caused by steam, it is necessary to control the automatic pressure relief device to relieve the pressure in time to avoid safety risks caused by overpressure.

[0009] The risk handling instruction generation module can automatically analyze monitoring data and generate corresponding risk handling instructions without human intervention, thereby improving the efficiency and speed of risk handling and significantly reducing the probability of accidents. The risk can then be automatically handled through a safety handling controller based on a control chip, effectively reducing the accident response time and the damage that may be caused by the accident.

[0010] The integration of various risk handling devices such as automatic power-off control devices, automatic fire extinguishing devices and automatic pressure relief devices enables the high-voltage switchgear to cope with a variety of different safety risks.

[0011] The automated design of the system reduces the risk of operators directly contacting the high-voltage switchgear and improves the safety of operators.

[0012] Through real-time monitoring and timely risk management, the overall reliability and stability of the high-voltage switchgear are improved, ensuring the continuous and stable operation of the power system. The intelligent safety device can also record and analyze accident data, which is helpful for subsequent accident investigation and the formulation of preventive measures.

[0013] Optionally, the safety risk monitoring module includes an external camera, an internal camera, an internal audio collection microphone, a vibration sensor, an air pressure sensor, a temperature sensor and a switch cabinet operation data collection module. The external camera is installed outside the high-voltage switch cabinet body through a bracket to capture visual images within a five-meter range around the outside of the high-voltage switch cabinet body. The internal camera is installed inside the high-voltage switch cabinet body to collect visual images inside the high-voltage switch cabinet body. The internal audio collection microphone and the vibration sensor are respectively installed in the high-voltage switch cabinet body to collect audio data and vibration data inside the high-voltage switch cabinet body respectively. The air pressure sensor is used to collect the internal air pressure of the high-voltage switch cabinet body. The temperature sensor is used to collect the internal temperature of the high-voltage switch cabinet body. The switch cabinet operation data collection module is electrically connected to the high-voltage switch cabinet body to collect the operating voltage and current data of the high-voltage switch cabinet body. The external camera, the internal camera, the internal audio collection microphone, the vibration sensor, the air pressure sensor, the temperature sensor and the switch cabinet operation data collection module are respectively communicated with the risk processing instruction generation module.

[0014] By adopting the above technical solution, by integrating external cameras, internal cameras, internal audio acquisition microphones, vibration sensors, air pressure sensors, temperature sensors and switchgear operation data acquisition modules, all-round monitoring of high-voltage switchgear is achieved, including vision, hearing, vibration, air pressure and operating voltage and current parameters, so that the operating status of the switchgear can be more comprehensively evaluated.

[0015] By collecting and analyzing data in real time, abnormal situations can be discovered in a timely manner, such as increased temperature, abnormal sounds, increased vibration, etc., which may be precursors to equipment failure, thereby achieving early risk identification and early warning.

[0016] By monitoring and analyzing data, appropriate risk management measures can be taken before potential safety risks develop into serious accidents, such as automatic power outage, fire extinguishing or pressure relief, thereby preventing accidents from occurring.

[0017] The use of internal and external cameras can monitor the operator's actions or other uncontrollable illegal operations and other safety risks. The switch cabinet operation data acquisition module can provide accurate voltage and current data, which is essential for diagnosing equipment performance and formulating maintenance plans.

[0018] Optionally, the risk processing instruction generation module includes an input-output interface, a memory and a computer, the input terminals of the input-output interface are respectively communicatively connected to the data output ends of an external camera, an internal camera, an internal audio acquisition microphone, a vibration sensor, an air pressure sensor, a temperature sensor and a switch cabinet operation data acquisition module, the memory is communicatively connected to the input-output interface, the computer is communicatively connected to the memory to interactively collect multi-source data, the computer deploys a weighted risk assessment model based on multi-source information fusion, an improved fuzzy Petri net instruction decision model and a risk instruction database, the multi-source data is input into the weighted risk assessment model to output whether there is a safety risk and the type of risk, the risk types include arc fault risk, mechanical failure risk, fire risk and internal overvoltage risk, if it is determined that there is a safety risk, the computer inputs the risk type into the improved fuzzy Petri net instruction decision model, the improved fuzzy Petri net instruction decision model outputs a matching instruction number, the computer retrieves the control instruction and the control object from the risk instruction database based on the instruction number, and transmits the control instruction to the safety disposal controller through the output end of the input-output interface.

[0019] By adopting the above technical solution, the computer first pre-processes the collected multi-source data, including denoising, normalization, etc., to improve the accuracy of subsequent analysis.

[0020] Extract features from preprocessed data, such as using Fourier transform to extract frequency features of vibration data, and using image processing technology to extract features of visual data.

[0021] The extracted features are input into the weighted risk assessment model to calculate the risk value R. Assuming that the collected data points are D= { d 1 , d 2 , …, d n} , where d i Represents the i-th type of data (such as vision, audio, vibration, etc.), first for each type of data d i Extract feature F i , for each feature F i Assign weight W i , calculate the risk score R for each feature i , R i =f ( F i , W i) ;

[0022] Set a score threshold for each feature. If the score exceeds the threshold, it is directly judged that there is a security risk.

[0023] Where f is the scoring function, which can be linear or nonlinear.

[0024] Calculate the total risk score R:

[0025] Set the total risk score threshold. If there is no single security risk, but the total risk score is greater than the total risk score threshold, the output is still that there is a security risk.

[0026] The generation of risk handling instructions is a dynamic decision-making process based on multimodal risk assessment, which can be mathematically expressed as follows:

[0027] Risk characteristic coding matrix:

[0028] C ( t ) =Φ softmax ( R(t) ) ;

[0029] Where Φ is a 4 × 4 risk type-severity matrix (arc fault, mechanical failure, fire, overvoltage × minor / moderate / severe / critical);

[0030] Real-time priority calculation:

[0031]

[0032] γ∈[0,1] is the state stability coefficient (dynamically estimated by Kalman filtering)

[0033] Adopt improved fuzzy Petri net decision model:

[0034] Rule base structure: Node set: N = {sensor anomaly, arc characteristics, temperature and pressure rate, ...}

[0035] Transfer function: (σ is the Sigmoid function, and the weight w is trained through the fault case library)

[0036] Execute the instruction generation function:

[0037]

[0038] Where: μ i( t ) is the membership degree of the i-th risk, I ik is the association matrix between risk type i and execution device k, θ k is the activation threshold of actuator k;

[0039] For example, arc fault risk management:

[0040] When a di / dt current rise rate >15kA / μs is detected, accompanied by ultraviolet visual characteristics;

[0041] The control objects are the automatic power-off control device and the automatic pressure relief device, and the control instructions are power-off control and pressure relief start. Of course, sound and light alarm instructions can also be added.

[0042] Using time Petri net modeling:

[0043]

[0044] Optionally, the automatic power-off control device includes a first automatic switch and a second automatic switch, the first automatic switch is a circuit breaker of the high-voltage switchgear body, and the second automatic switch is used to control the on and off of the high-voltage switchgear body connected to the mains power line. When the risk handling instruction generation module outputs that there is a safety risk, the computer outputs a circuit disconnection instruction to the safety disposal controller through the output end of the input and output interface, and the safety disposal controller controls the first automatic switch and the second automatic switch to disconnect respectively based on the circuit disconnection instruction.

[0045] By adopting the above technical solution, two automatic switches are used to implement the power-off operation, wherein the first automatic switch can be the circuit breaker of the high-voltage switch cabinet body. If the circuit breaker of the high-voltage switch cabinet body is a circuit breaker that can be controlled by signals, it can be used. If not, it needs to be installed additionally. The circuit breaker inside the high-voltage switch cabinet body has the risk of failure in an emergency. Therefore, the second automatic switch is also used to control the high-voltage switch cabinet body to access the mains power line, so as to ensure that the power supply can be cut off when a safety risk occurs.

[0046] Optionally, the automatic fire extinguishing device includes a bracket and a hot aerosol automatic fire extinguishing device, wherein the hot aerosol automatic fire extinguishing device notifies the bracket to be installed above the high-voltage switchgear body, and when the risk handling instruction generation module outputs that there is a safety risk, and the safety risk is a fire risk, the computer outputs a fire extinguishing instruction to the safety disposal controller through the output end of the input and output interface, and the safety disposal controller controls the hot aerosol automatic fire extinguishing device to start extinguishing the fire based on the fire extinguishing instruction.

[0047] By adopting the above technical solution, the hot aerosol automatic fire extinguishing device can realize the automatic control of electrical signals, and the components of the S-type aerosol fire extinguishing agent sprayed are mainly N2, a small amount of CO2, metal salt solid particles, etc., all of which are non-toxic substances. In actual fire extinguishing, the S-type fire extinguishing aerosol spraying process only takes about 1 minute, and the fire extinguishing time is only 2-3 minutes. This process is harmless to the human body. High fire extinguishing efficiency, no secondary damage to electrical appliances: The fire extinguishing mechanism of the S-type fire extinguishing aerosol is mainly heat absorption and cooling fire extinguishing, chemical inhibition fire extinguishing, so its fire extinguishing efficiency is high.

[0048] Optionally, the automatic pressure relief device includes a vacuum pump, an integrated block and multiple pressure relief pipes, the multiple pressure relief pipes are respectively installed on the shell of the high-voltage switchgear body, the integrated block is provided with an air extraction connection port, multiple pressure relief connection ports and multiple internal channels, the air extraction connection port is respectively connected with the multiple pressure relief connection ports through the multiple internal channels, the vacuum extraction port of the vacuum pump is connected with the air extraction connection port of the integrated block through a pipeline, the multiple pressure relief pipes are located at one end outside the shell of the high-voltage switchgear body and are respectively connected with the multiple pressure relief connection ports of the integrated block through pipelines, when the risk handling instruction generation module outputs a safety risk, and the safety risk is an internal overpressure risk, the computer outputs a pressure relief instruction to the safety disposal controller through the output end of the input and output interface, and the safety disposal controller controls the vacuum pump to start air extraction and pressure relief based on the pressure relief instruction.

[0049] By adopting the above technical solution, the automatic pressure relief device uses the suction force of the vacuum pump to quickly discharge the high-pressure gas inside the high-voltage switch cabinet body, which can effectively avoid the risk of explosion caused by high pressure.

[0050] Optionally, the safety disposal controller includes an instruction cache and a control chip, the instruction cache is communicatively connected to the output end of the input-output interface, the control chip is communicatively connected to the instruction cache, and respectively controls the execution actions of the first automatic switch, the second automatic switch, the hot aerosol automatic fire extinguishing device and the vacuum pump.

[0051] By adopting the above technical solution, the control chip can realize automatic control of each device.

[0052] A safety control method for a high-voltage switch cabinet with an intelligent safety device uses a high-voltage switch cabinet with an intelligent safety device to control the safety risk of a high-voltage switch cabinet body, comprising the following steps:

[0053] Step 1, the computer communicates with the memory to interactively collect multi-source data, the multi-source data including the visual picture within a five-meter range outside the high-voltage switch cabinet body, the visual picture inside the high-voltage switch cabinet body, the audio data inside the high-voltage switch cabinet body, the vibration data, the internal air pressure data, the internal temperature data, and the operating voltage and current data of the high-voltage switch cabinet body;

[0054] Step 2: The computer inputs the multi-source data into a weighted risk assessment model, and the weighted risk assessment model outputs whether there is a security risk and the type of risk;

[0055] Step 3: If it is determined that there is a safety risk, the computer outputs a matching instruction number based on the improved fuzzy Petri net instruction decision model, and the computer retrieves the control instruction and the control object from the risk instruction database based on the instruction number and transmits them to the safety disposal controller;

[0056] Step 4: The safety disposal controller controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the control instructions and the control objects.

[0057] Optionally, when the risk handling instruction generation module outputs that there is a safety risk, the computer outputs a circuit disconnection instruction to the safety handling controller through the output end of the input / output interface, and the safety handling controller controls the first automatic switch and the second automatic switch to disconnect respectively based on the circuit disconnection instruction;

[0058] If the safety risk is a fire risk, the computer outputs a fire extinguishing instruction to the safety disposal controller through the output end of the input and output interface, and the safety disposal controller controls the hot aerosol automatic fire extinguishing device to start extinguishing the fire based on the fire extinguishing instruction;

[0059] If the safety risk is an internal overpressure risk, the computer outputs a pressure relief instruction to the safety disposal controller through the output end of the input / output interface, and the safety disposal controller simultaneously controls the vacuum pump to start exhaust and pressure relief based on the pressure relief instruction.

[0060] In summary, the present invention includes at least one of the following beneficial technical effects:

[0061] The present invention can provide a high-voltage switchgear with an intelligent safety device and a control method. By integrating the intelligent safety device, the high-voltage switchgear can monitor potential safety risks in real time and respond in a timely manner. By collecting visual images, audio data, operating data, vibration data and internal air pressure data, all-round and multi-angle monitoring of the high-voltage switchgear is achieved. The risk processing instruction generation module intelligently analyzes the visual images, audio data, operating data, vibration data and internal air pressure data to determine whether there is a safety risk and the type of safety risk. The analysis method can be based on visual feature recognition, or based on a trained large model to intelligently analyze the type of safety risk. For the high-voltage switchgear, the risk types include arc fault risk, mechanical failure risk, fire risk and internal overvoltage risk, etc.

[0062] The risk handling instruction generation module can automatically analyze monitoring data and generate corresponding risk handling instructions without human intervention, thereby improving the efficiency and speed of risk handling and significantly reducing the probability of accidents. The risk can then be automatically handled through a safety handling controller based on a control chip, effectively reducing the accident response time and the damage that may be caused by the accident.

[0063] The integration of various risk handling devices such as automatic power-off control devices, automatic fire extinguishing devices and automatic pressure relief devices enables the high-voltage switchgear to cope with a variety of different safety risks.

[0064] The automated design of the system reduces the risk of operators directly contacting the high-voltage switchgear and improves the safety of operators.

[0065] Through real-time monitoring and timely risk management, the overall reliability and stability of the high-voltage switchgear are improved, ensuring the continuous and stable operation of the power system. The intelligent safety device can also record and analyze accident data, which is helpful for subsequent accident investigations and the formulation of preventive measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 It is a schematic diagram of the connection principle of the electrical components of the high-voltage switch cabinet with an intelligent safety device of the present invention;

[0067] Figure 2 It is a structural schematic diagram of a high-voltage switch cabinet with an intelligent safety device according to the present invention.

[0068] Description of the drawings: 1. High-voltage switchgear body; 2. Safety risk monitoring module; 21. External camera; 22. Internal camera; 23. Internal audio acquisition microphone; 24. Vibration sensor; 25. Air pressure sensor; 26. Temperature sensor; 27. Switchgear operation data acquisition module; 3. Risk processing instruction generation module; 31. Input and output interface; 32. Memory; 33. Computer; 411. First automatic switch; 412. Second automatic switch; 421. Bracket; 422. Hot aerosol automatic fire extinguishing device; 431. Vacuum pump; 432. Integrated block; 433. Pressure relief pipe; 44. Safety disposal controller; 441. Instruction cache; 442. Control chip. DETAILED DESCRIPTION

[0069] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0070] The embodiments of the present invention disclose a high-voltage switch cabinet with an intelligent safety device and a control method.

[0071] Reference Figure 1 and Figure 2Embodiment 1, a high-voltage switchgear with an intelligent safety device, comprises a high-voltage switchgear body 1 and an intelligent safety device, the intelligent safety device comprises a safety risk monitoring module 2, a risk handling instruction generating module 3 and a risk handling device, the safety risk monitoring module collects visual images, audio data, and air pressure data of a set range around and inside the high-voltage switchgear body 1, and collects operation data and vibration data of the high-voltage switchgear body 1, the risk handling instruction generating module 3 is communicated with the safety risk monitoring module 2, and analyzes whether there is a safety risk and the type of risk based on the visual image, audio data and vibration data, and generates a risk handling instruction based on the risk type, the risk handling device comprises an automatic power-off control device, an automatic fire extinguishing device, an automatic pressure relief device and a safety handling controller 44 based on a control chip, the safety handling controller 44 is communicated with the risk handling instruction generating module 3 to exchange risk handling instructions, and controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the risk handling instructions.

[0072] By integrating intelligent safety devices, high-voltage switchgear can monitor potential safety risks in real time and respond in a timely manner. By collecting visual images, audio data, operating data, vibration data and internal air pressure data, all-round and multi-angle monitoring of high-voltage switchgear is achieved. The risk processing instruction generation module 3 can intelligently analyze whether there is a safety risk and the type of safety risk based on visual images, audio data, operating data, vibration data and internal air pressure data. The analysis method can be based on visual feature recognition, or based on the trained large model intelligent analysis to obtain the type of safety risk. For high-voltage switchgear, the risk types include arc fault risk, mechanical failure risk, fire risk, etc. Disaster risk and internal overpressure risk, among which arc fault risk is a common risk in high-voltage switchgear. The automatic power-off control device disconnects the power supply to remind the staff to deal with it in time. Mechanical failure risks include structural damage such as damage to the outer box, and the automatic power-off control device is also required to disconnect the power supply to remind the staff to deal with it in time. For fire risks, only using power-off operations may cause greater losses due to fire. While using power-off operations, the automatic fire extinguishing device is controlled to perform fire extinguishing operations. Similarly, when analyzing the existence of internal overpressure risks, such as excessive internal air pressure caused by steam, it is necessary to control the automatic pressure relief device to release the pressure in time to avoid safety risks caused by overpressure.

[0073] The risk handling instruction generation module can automatically analyze the monitoring data and generate corresponding risk handling instructions without human intervention, thereby improving the efficiency and speed of risk handling and significantly reducing the probability of accidents. The risk can then be automatically handled through the safety handling controller 44 based on the control chip, effectively reducing the accident response time and the damage that may be caused by the accident.

[0074] The integration of various risk handling devices such as automatic power-off control devices, automatic fire extinguishing devices and automatic pressure relief devices enables the high-voltage switchgear to cope with a variety of different safety risks.

[0075] The automated design of the system reduces the risk of operators directly contacting the high-voltage switchgear and improves the safety of operators.

[0076] Through real-time monitoring and timely risk management, the overall reliability and stability of the high-voltage switchgear are improved, ensuring the continuous and stable operation of the power system. The intelligent safety device can also record and analyze accident data, which is helpful for subsequent accident investigations and the formulation of preventive measures.

[0077] Embodiment 2, the safety risk monitoring module 2 includes an external camera 21, an internal camera 22, an internal audio collection microphone 23, a vibration sensor 24, an air pressure sensor 25, a temperature sensor 26 and a switch cabinet operation data collection module 27, the external camera 21 is installed outside the high-voltage switch cabinet body 1 through a bracket to shoot the visual picture within a five-meter range around the outside of the high-voltage switch cabinet body 1, the internal camera 22 is installed inside the high-voltage switch cabinet body 1 to collect the visual picture inside the high-voltage switch cabinet body 1, the internal audio collection microphone 23 and the vibration sensor 24 are respectively installed in the high-voltage switch cabinet body 1, and the internal audio collection microphone 23 and the vibration sensor 24 are respectively installed in the high-voltage switch cabinet body 1. The audio data and vibration data in the high-voltage switch cabinet body 1 are collected separately. The air pressure sensor 25 is used to collect the internal air pressure of the high-voltage switch cabinet body 1. The temperature sensor 26 is used to collect the internal temperature of the high-voltage switch cabinet body 1. The switch cabinet operation data collection module 27 is electrically connected to the high-voltage switch cabinet body 1 to collect the operating voltage and current data of the high-voltage switch cabinet body 1. The external camera 21, the internal camera 22, the internal audio collection microphone 23, the vibration sensor 24, the air pressure sensor 25, the temperature sensor 26 and the switch cabinet operation data collection module 27 are respectively communicated with the risk processing instruction generation module 3.

[0078] By integrating an external camera 21, an internal camera 22, an internal audio acquisition microphone 23, a vibration sensor 24, an air pressure sensor 25, a temperature sensor 26 and a switch cabinet operation data acquisition module 27, all-round monitoring of the high-voltage switch cabinet is achieved, including vision, hearing, vibration, air pressure and operating voltage and current parameters, so that the operating status of the switch cabinet can be more comprehensively evaluated.

[0079] By collecting and analyzing data in real time, abnormal situations can be discovered in a timely manner, such as increased temperature, abnormal sounds, increased vibration, etc., which may be precursors to equipment failure, thereby achieving early risk identification and early warning.

[0080] By monitoring and analyzing data, appropriate risk management measures can be taken before potential safety risks develop into serious accidents, such as automatic power outage, fire extinguishing or pressure relief, thereby preventing accidents from occurring.

[0081] The use of internal and external cameras can monitor the operator's actions or other uncontrollable illegal operations and other safety risks. The switch cabinet operation data acquisition module can provide accurate voltage and current data, which is essential for diagnosing equipment performance and formulating maintenance plans.

[0082] Embodiment 3, the risk processing instruction generation module 3 includes an input-output interface 31, a memory 32 and a computer 33, the input terminal of the input-output interface 31 is respectively connected to the external camera 21, the internal camera 22, the internal audio acquisition microphone 23, the vibration sensor 24, the air pressure sensor 25, the temperature sensor 26 and the data output end of the switch cabinet operation data acquisition module 27, the memory 32 is connected to the input-output interface 31, the computer 33 is connected to the memory 32 to interactively collect multi-source data, and the computer 33 deploys a weighted risk assessment model based on multi-source information fusion, an improved fuzzy Petri The computer 33 inputs the risk type into the improved fuzzy Petri net instruction decision model and the risk instruction database, and inputs multi-source data into the weighted risk assessment model to output whether there is a safety risk and the risk type. The risk types include arc fault risk, mechanical failure risk, fire risk and internal overvoltage risk. If it is determined that there is a safety risk, the computer 33 inputs the risk type into the improved fuzzy Petri net instruction decision model, and the improved fuzzy Petri net instruction decision model outputs the matching instruction number. The computer 33 retrieves the control instruction and the control object from the risk instruction database based on the instruction number, and transmits the control instruction to the safety disposal controller 44 through the output end of the input and output interface 31.

[0083] The computer 33 first performs preprocessing on the collected multi-source data, including denoising, normalization, etc., to improve the accuracy of subsequent analysis.

[0084] Extract features from preprocessed data, such as using Fourier transform to extract frequency features of vibration data, and using image processing technology to extract features of visual data.

[0085] The extracted features are input into the weighted risk assessment model to calculate the risk value R. Assuming that the collected data points are D= { d 1 , d 2 , …, d n} , where d i Represents the i-th type of data (such as vision, audio, vibration, etc.), first for each type of data d i Extract feature F i , for each feature F i Assign weight W i , calculate the risk score R for each feature i , R i =f ( Fi , W i) ;

[0086] Set a score threshold for each feature. If the score exceeds the threshold, it is directly judged that there is a security risk.

[0087] Where f is the scoring function, which can be linear or nonlinear.

[0088] Calculate the total risk score R:

[0089] Set the total risk score threshold. If there is no single security risk, but the total risk score is greater than the total risk score threshold, the output is still that there is a security risk.

[0090] The generation of risk handling instructions is a dynamic decision-making process based on multimodal risk assessment, which can be mathematically expressed as follows:

[0091] Risk characteristic coding matrix:

[0092] C ( t ) =Φ softmax ( R(t) ) ;

[0093] Where Φ is a 4 × 4 risk type-severity matrix (arc fault, mechanical failure, fire, overvoltage × minor / moderate / severe / critical);

[0094] Real-time priority calculation:

[0095]

[0096] γ∈[0,1] is the state stability coefficient (dynamically estimated by Kalman filtering)

[0097] Using the improved fuzzy Petri net decision model:

[0098] Rule base structure: Node set: N = {sensor anomaly, arc characteristics, temperature and pressure rate, ...}

[0099] Transfer function: (σ is the Sigmoid function, and the weight w is trained through the fault case library)

[0100] Execute the instruction generation function:

[0101]

[0102] Where: μ i( t ) is the membership degree of the i-th risk, I ik is the association matrix between risk type i and execution device k, θk is the activation threshold of actuator k;

[0103] For example, arc fault risk management:

[0104] When a di / dt current rise rate >15kA / μs is detected, accompanied by ultraviolet visual characteristics;

[0105] The control objects are the automatic power-off control device and the automatic pressure relief device, and the control instructions are power-off control and pressure relief start. Of course, sound and light alarm instructions can also be added.

[0106] Using time Petri net modeling:

[0107]

[0108] Embodiment 4, the automatic power-off control device includes a first automatic switch 411 and a second automatic switch 412. The first automatic switch 411 is a circuit breaker of the high-voltage switch cabinet body 1, and the second automatic switch 412 is used to control the on and off of the high-voltage switch cabinet body 1 connected to the mains power line. When the risk handling instruction generation module 3 outputs that there is a safety risk, the computer 33 outputs a circuit disconnection instruction to the safety disposal controller 44 through the output end of the input and output interface 31. The safety disposal controller 44 controls the first automatic switch 411 and the second automatic switch 412 to disconnect based on the circuit disconnection instruction.

[0109] Two automatic switches are used to implement the power-off operation, wherein the first automatic switch 411 can be the circuit breaker of the high-voltage switch cabinet body 1. If the circuit breaker of the high-voltage switch cabinet body 1 is a circuit breaker that can be controlled by signals, it can be used. If not, it needs to be installed additionally. The circuit breaker inside the high-voltage switch cabinet body 1 is at risk of failure in an emergency. Therefore, the second automatic switch 412 is also used to control the high-voltage switch cabinet body 1 to access the AC power line, thereby ensuring that the power supply can be cut off when a safety risk occurs.

[0110] Example 5, the automatic fire extinguishing device includes a bracket 421 and a hot aerosol automatic fire extinguishing device 422. The hot aerosol automatic fire extinguishing device 422 notifies that the bracket 421 is installed above the high-voltage switch cabinet body 1. When the risk handling instruction generation module 3 outputs that there is a safety risk, and the safety risk is a fire risk, the computer 33 outputs a fire extinguishing instruction to the safety disposal controller 44 through the output end of the input and output interface 31. The safety disposal controller 44 controls the hot aerosol automatic fire extinguishing device 422 to start extinguishing based on the fire extinguishing instruction.

[0111] The hot aerosol automatic fire extinguishing device 422 can realize the automatic control of electric signals, and the components of the S-type aerosol fire extinguishing agent sprayed are mainly N2, a small amount of CO2, metal salt solid particles, etc., all of which are non-toxic substances. In actual fire extinguishing, the S-type fire extinguishing aerosol spraying process only takes about 1 minute, and the fire extinguishing time is only 2-3 minutes. This process is harmless to the human body. The fire extinguishing efficiency is high, and there is no secondary damage to electrical appliances: the fire extinguishing mechanism of the S-type fire extinguishing aerosol is mainly heat absorption and cooling fire extinguishing, and chemical inhibition fire extinguishing, so its fire extinguishing efficiency is high.

[0112] Embodiment 6, the automatic pressure relief device includes a vacuum pump 431, an integrated block 432 and a plurality of pressure relief pipes 433, the plurality of pressure relief pipes 433 are respectively installed on the shell of the high-voltage switch cabinet body 1, the integrated block 432 is provided with an air extraction connection port, a plurality of pressure relief connection ports and a plurality of internal channels, the air extraction connection port is respectively connected with the plurality of pressure relief connection ports through the plurality of internal channels, the vacuum extraction port of the vacuum pump 431 is connected with the air extraction connection port of the integrated block 432 through a pipeline, the plurality of pressure relief pipes 433 are located at one end outside the shell of the high-voltage switch cabinet body 1 and are respectively connected with the plurality of pressure relief connection ports of the integrated block 432 through pipelines, when the risk handling instruction generation module 3 outputs that there is a safety risk, and the safety risk is an internal overpressure risk, the computer 33 outputs a pressure relief instruction to the safety handling controller 44 through the output end of the input-output interface 31, and the safety handling controller 44 controls the vacuum pump 431 to start air extraction and pressure relief based on the pressure relief instruction.

[0113] The automatic pressure relief device uses the suction force of the vacuum pump 431 to quickly discharge the high-pressure gas inside the high-voltage switch cabinet body 1, which can effectively avoid the risk of explosion caused by high pressure.

[0114] Embodiment 7, the safety disposal controller 44 includes an instruction cache 441 and a control chip 442, the instruction cache 441 is communicatively connected to the output end of the input-output interface 31, the control chip 442 is communicatively connected to the instruction cache 441, and controls the execution actions of the first automatic switch 411, the second automatic switch 412, the hot aerosol automatic fire extinguishing device 422 and the vacuum pump 431 respectively.

[0115] The control chip 442 can realize automatic control of each device.

[0116] Embodiment 8, a safety control method of a high-voltage switch cabinet with an intelligent safety device, uses a high-voltage switch cabinet with an intelligent safety device to control the safety risk of a high-voltage switch cabinet body 1, comprising the following steps:

[0117] Step 1, the computer 33 communicates with the memory 32 to interactively collect multi-source data, the multi-source data including the visual picture within a five-meter range outside the high-voltage switch cabinet body 1, the visual picture inside the high-voltage switch cabinet body 1, the audio data, vibration data, internal air pressure data, internal temperature data, and the operating voltage and current data of the high-voltage switch cabinet body 1;

[0118] Step 2, the computer 33 inputs the multi-source data into the weighted risk assessment model, and the weighted risk assessment model outputs whether there is a security risk and the type of risk;

[0119] Step 3, if it is determined that there is a safety risk, the computer 33 outputs a matching instruction number based on the improved fuzzy Petri net instruction decision model, and the computer 33 retrieves the control instruction and the control object from the risk instruction database based on the instruction number and transmits them to the safety disposal controller 44;

[0120] Step 4: The safety handling controller 44 controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the control instructions and the control objects.

[0121] In Example 9, when the risk handling instruction generation module 3 outputs that there is a safety risk, the computer 33 outputs a circuit disconnection instruction to the safety handling controller 44 through the output end of the input / output interface 31, and the safety handling controller 44 controls the first automatic switch 411 and the second automatic switch 412 to disconnect based on the circuit disconnection instruction;

[0122] If the safety risk is a fire risk, the computer 33 outputs a fire extinguishing instruction to the safety handling controller 44 through the output end of the input / output interface 31, and the safety handling controller 44 controls the hot aerosol automatic fire extinguishing device 422 to start extinguishing the fire based on the fire extinguishing instruction;

[0123] If the safety risk is an internal overpressure risk, the computer 33 outputs a pressure relief instruction to the safety handling controller 44 through the output end of the input / output interface 31 , and the safety handling controller 44 controls the vacuum pump 431 to start exhaust and pressure relief based on the pressure relief instruction.

[0124] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. High-voltage switchgear with intelligent safety device, characterized in that: The invention comprises a high-voltage switch cabinet body (1) and an intelligent safety device, wherein the intelligent safety device comprises a safety risk monitoring module (2), a risk handling instruction generating module (3) and a risk handling device, wherein the safety risk monitoring module collects visual images, audio data and air pressure data within a set range around the high-voltage switch cabinet body (1) and inside, and collects operation data and vibration data of the high-voltage switch cabinet body (1), wherein the risk handling instruction generating module (3) is connected in communication with the safety risk monitoring module (2), and analyzes whether there is a safety risk and the type of risk based on the visual images, audio data and vibration data, and generates a risk handling instruction based on the type of risk, wherein the risk handling device comprises an automatic power-off control device, an automatic fire extinguishing device, an automatic pressure relief device and a safety handling controller (44) based on a control chip, wherein the safety handling controller (44) is connected in communication with the risk handling instruction generating module (3) to exchange risk handling instructions, and controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the risk handling instructions.

2. The high-voltage switch cabinet with an intelligent safety device according to claim 1, characterized in that: The safety risk monitoring module (2) comprises an external camera (21), an internal camera (22), an internal audio collection microphone (23), a vibration sensor (24), an air pressure sensor (25), a temperature sensor (26) and a switch cabinet operation data collection module (27), wherein the external camera (21) is installed outside the high-voltage switch cabinet body (1) through a bracket to capture visual images within a five-meter range around the high-voltage switch cabinet body (1), the internal camera (22) is installed inside the high-voltage switch cabinet body (1) to collect visual images inside the high-voltage switch cabinet body (1), and the internal audio collection microphone (23) and the vibration sensor (24) are respectively installed inside the high-voltage switch cabinet body (1) to collect respectively The audio data and vibration data in the high-voltage switch cabinet body (1), the air pressure sensor (25) is used to collect the air pressure inside the high-voltage switch cabinet body (1), the temperature sensor (26) is used to collect the temperature inside the high-voltage switch cabinet body (1), the switch cabinet operation data collection module (27) is electrically connected to the high-voltage switch cabinet body (1), and collects the operating voltage and current data of the high-voltage switch cabinet body (1), and the external camera (21), the internal camera (22), the internal audio collection microphone (23), the vibration sensor (24), the air pressure sensor (25), the temperature sensor (26) and the switch cabinet operation data collection module (27) are respectively connected to the risk processing instruction generation module (3) for communication.

3. The high-voltage switch cabinet with an intelligent safety device according to claim 2, characterized in that: The risk processing instruction generation module (3) comprises an input / output interface (31), a memory (32) and a computer (33), wherein the input terminal of the input / output interface (31) is respectively connected to the external camera (21), the internal camera (22), the internal audio acquisition microphone (23), the vibration sensor (24), the air pressure sensor (25), the temperature sensor (26) and the data output end of the switch cabinet operation data acquisition module (27), the memory (32) is connected to the input / output interface (31), the computer (33) is connected to the memory (32) to collect interactively collected multi-source data, and the computer (33) deploys a weighted risk assessment method based on multi-source information fusion. An evaluation model, an improved fuzzy Petri net instruction decision model and a risk instruction database are used to input multi-source data into a weighted risk evaluation model to output whether there is a safety risk and the type of risk. The risk types include arc fault risk, mechanical failure risk, fire risk and internal overvoltage risk. If it is determined that there is a safety risk, the computer (33) inputs the risk type into the improved fuzzy Petri net instruction decision model. The improved fuzzy Petri net instruction decision model outputs a matching instruction number. The computer (33) retrieves a control instruction and a control object from the risk instruction database based on the instruction number, and transmits the control instruction to a safety disposal controller (44) through the output end of the input / output interface (31).

4. The high-voltage switch cabinet with intelligent safety device according to claim 3 is characterized in that: The automatic power-off control device comprises a first automatic switch (411) and a second automatic switch (412), wherein the first automatic switch (411) is a circuit breaker of a high-voltage switch cabinet body (1), and the second automatic switch (412) is used to control the on and off of the high-voltage switch cabinet body (1) connected to a mains power line. When the risk handling instruction generation module (3) outputs that there is a safety risk, the computer (33) outputs a circuit disconnection instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the first automatic switch (411) and the second automatic switch (412) to disconnect based on the circuit disconnection instruction.

5. The high-voltage switch cabinet with intelligent safety device according to claim 4 is characterized in that: The automatic fire extinguishing device comprises a bracket (421) and a hot aerosol automatic fire extinguishing device (422), wherein the hot aerosol automatic fire extinguishing device (422) notifies the bracket (421) to be installed above the high-voltage switch cabinet body (1), and when the risk handling instruction generation module (3) outputs that there is a safety risk, and the safety risk is a fire risk, the computer (33) outputs a fire extinguishing instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the hot aerosol automatic fire extinguishing device (422) to start extinguishing the fire based on the fire extinguishing instruction.

6. The high-voltage switch cabinet with intelligent safety device according to claim 5, characterized in that: The automatic pressure relief device comprises a vacuum pump (431), an integrated block (432) and a plurality of pressure relief pipes (433), wherein the plurality of pressure relief pipes (433) are respectively mounted on the shell of the high-voltage switch cabinet body (1), the integrated block (432) is provided with an air extraction connection port, a plurality of pressure relief connection ports and a plurality of internal channels, the air extraction connection port is respectively connected to the plurality of pressure relief connection ports through the plurality of internal channels, the vacuum extraction port of the vacuum pump (431) is connected to the air extraction connection port of the integrated block (432) through a pipeline, the plurality of pressure relief pipes (433) are located at one end outside the shell of the high-voltage switch cabinet body (1) and are respectively connected to the plurality of pressure relief connection ports of the integrated block (432) through pipelines, when the risk handling instruction generation module (3) outputs that there is a safety risk, and the safety risk is an internal overpressure risk, the computer (33) outputs a pressure relief instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the vacuum pump (431) to start air extraction and pressure relief based on the pressure relief instruction.

7. The high-voltage switch cabinet with intelligent safety device according to claim 6, characterized in that: The safety disposal controller (44) comprises an instruction buffer (441) and a control chip (442), wherein the instruction buffer (441) is communicatively connected to the output end of the input / output interface (31), and the control chip (442) is communicatively connected to the instruction buffer (441), and respectively controls the execution actions of the first automatic switch (411), the second automatic switch (412), the hot aerosol automatic fire extinguishing device (422), and the vacuum pump (431).

8. A safety control method for a high-voltage switch cabinet with an intelligent safety device, characterized in that: Using the high-voltage switch cabinet with an intelligent safety device as claimed in claim 7 to control the safety risk of the high-voltage switch cabinet body (1) comprises the following steps: Step 1, the computer (33) communicates with the memory (32) to interactively collect multi-source data, the multi-source data including a visual image within a five-meter range outside the high-voltage switch cabinet body (1), a visual image inside the high-voltage switch cabinet body (1), audio data inside the high-voltage switch cabinet body (1), vibration data, internal air pressure data, internal temperature data, and operating voltage and current data of the high-voltage switch cabinet body (1); Step 2, the computer (33) inputs the multi-source data into a weighted risk assessment model, and the weighted risk assessment model outputs whether there is a security risk and the type of risk; Step 3, if it is determined that there is a safety risk, the computer (33) outputs a matching instruction number based on the improved fuzzy Petri net instruction decision model, and the computer (33) retrieves the control instruction and the control object from the risk instruction database based on the instruction number and transmits them to the safety disposal controller (44); Step 4: The safety handling controller (44) controls the execution actions of the automatic power-off control device, the automatic fire extinguishing device and the automatic pressure relief device respectively based on the control instruction and the control object.

9. The safety control method of a high-voltage switch cabinet with an intelligent safety device according to claim 8, characterized in that: When the risk handling instruction generation module (3) outputs that there is a safety risk, the computer (33) outputs a circuit disconnection instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the first automatic switch (411) and the second automatic switch (412) to disconnect based on the circuit disconnection instruction; If the safety risk is a fire risk, the computer (33) outputs a fire extinguishing instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the hot aerosol automatic fire extinguishing device (422) to start extinguishing the fire based on the fire extinguishing instruction; If the safety risk is an internal overpressure risk, the computer (33) outputs a pressure relief instruction to the safety handling controller (44) through the output end of the input / output interface (31), and the safety handling controller (44) controls the vacuum pump (431) to start exhaust and pressure relief based on the pressure relief instruction.

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